how do i get a list of all the instruments that are used for testing tail pipe emissions of vehicles?

Question

i wanna buy some instruments for my lab...so i want to have the list of all the varieties of instruments and their description ...available in the market for testing tail pipe emissions

Answer 1

This will tell you basically ....its really just one machine now.

http://www.findarticles.com/p/articles/mi_qa3828/is_200011/ai_n8910645